New from Allegro MicroSystems is an ultra sensitive, Hall-effect switch with latched digital outputs and omnipolar magnetic actuation. The A1172 features operation at low supply currents and voltages, making it ideal for battery-operated electronics. The low operating supply voltage of 1,65 V to 3,5 V, and unique clocking algorithm enable power requirements of less than 15 mW with a 2,75 V supply. Unlike many Hall-effect switches, both north and south polarity magnetic fields are of sufficient strength to activate output switching, to either off or on states. Additionally, the device, available in a four-pin wafer level chip scale package, provides two push-pull outputs, configured such that one output switches off in the absence of sufficient magnetic field while the other output switches on in the absence of a magnetic field.
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